I'm sorry if this story was a bit short. I'm just a bit overwhelmed with work at the moment.

Anyways, I'm going to respond to some of the comments. If you don't care about power limits and theories, then just skip the bolded text.

CrimiK says that Divine Constructs cannot be recreated and that it is a canon limit. Well, usually I don't like to insult the Nasuverse, but that's not entirely true. For instance, at one of the good ends of the Heaven's Feel route, Shirou managed to project a pretty powerful Excalibur. In Fate/Kaleid Liner Prisma Illya, a vast amount of prana (a Holy Grail vessel like Illya) combined with Shirou/EMIYA's tracing ability allows imperfect Noble Phantasms to be recreated. Also, I'd like to point out that Servants are basically imitations of Heroic Spirits. Their information is taken from the throne and imputed into established Servant classes. When the Servant is created/summoned, their Noble Phantasms are recreated as well, this included Divine Constructs. However, to recreate Divine Constructs, Shirou will need a ton of power, though he can get it through the True Magic I've given him. As a parallel self of the son of Zelretch and with the powers of Justeaze Lizrich von Einzbern, he has amateur power of the Second Magic and a pretty powerful control of the Third Magic.

Don't hate me for giving the man True Magic. He already had True Magic level powers with Avalon.

Anyways, with the Second Magic, he only has enough control to get prana from other worlds, though actual control will require a Second Magic Mystic Code (which he can recreate at a whim). The Third Magic actually just gives him support based powers, though it is a bit OP. The Third Magic provides an inexhaustible amount of prana, the ability to materialize his soul (basically having no need for a physical body and immortality), and soul manipulation (some aspects of this could potentially lead to Servant summoning, though it might take some time and research on Shirou's part).

However, I'd like to say that most of the time, Shirou will hold back. As EMIYA, he could have easily won the war if he had just gone all out, however he easily held back, though even then he was powerful. For God's sake, he held off freaking Hercules without Unlimited Blade Works while injured from Saber's attack, and he killed off 6 of the demigod's lives. Also, Shirou will probably not carelessly release powerful Noble Phantasms, as he might accidentally destroy whatever city he's in (or the world).

This has been one of the most awkward moments of the Counter Guardian's life. Shirou was sitting on a plane for an hour with people he had just tried to kill, and having death glares aimed at him the whole way. Well, scratch that, the robot, who it turns out was some guy named Tony Stark in a metal suit, and the man, Bruce Banner, were looking at him with curiosity.

"See something you like?" Shirou asked the two. They were obviously scientists and after seeing his abilities, they wanted to know how Shirou worked.

Banner blushed, but Tony didn't back down. "How'd you do that?" he asked, straight to the point. "With the flower shield and the swords and the explosions?"

"I'd like to know as well," Thor grumbled. Shirou still couldn't believe that the Norse god of lightning was alive in this dimension. He also couldn't believe that Shirou was able to beat him so easily. Then again, he did have Enkidu and a copied Mjolnir, so he guessed it should have been expected.

"Simple," the magus smirked. "I use magecraft."

The moment he said magecraft, Tony gave him a disgusted look. "Oh, and I guess that's all there is, isn't it?"

Shirou blinked. "Of course not. You obviously don't know anything about it."

"Fine, Merlin. Enlighten me," he taunted.

"My magic basically focus on recreation, allowing me to recreate most weapons perfectly," Shirou replied. "I analyze the object, and then recreate it."

"So you basically reverse engineer objects?" Banner asked, interested.

"Pretty much," Shirou shrugged. "I have other spells, but-"

"We're here," the red haired woman, Natasha, interrupted. The plane touched the ground and the hanger doors opened up to reveal we were on a giant, flying, metal fortress.

"Okay," Shirou said. "Not what I was expecting."

Scene Break

Shirou was brought onto the flying ship, which was apparently named the Helicarrier. This world's superheroes boxed him in. After obtaining all sorts of information from them via Structural Analysis, the heroes were in his opinion, a let down.

First there was Steve Rogers, AKA Captain America. He was a super soldier from World War II and apparently, he saved the world on multiple occasion. If he was a servant, Shirou would put him under the Shielder category because of his shield proficiency.

Next was Tony Stark, AKA Iron Man. A genius playboy millionaire, he was in the weapons business until he was betrayed by his client. Then he became a superhero and began fighting crime. Shirou would classify him in either Caster, because his futuristic technology can resemble magecraft.

Then there was Thor. The literal Norse god of lightning was apparently banished here by his father, Odin. He was one of the biggest letdowns, because Shirou thought he was a Divine Spirit. However, in this universe, the Asgardians are more like aliens than spirits. They do give off divine energy, which was why Enkidu could capture Thor. Shirou would classify him as a Berserker because of his anger and his relation to the berserkers of the Norse.

Natasha Romanov, also known as the Black Widow, and Nick Fury were agents of an organization called SHIELD. SHIELD is a spy organization dedicated towards world piece. Those two are defiantly in the Assassin class.

Finally there was Bruce Banner. The others were saying how he has an alter ego called the Hulk, a raging monster who gets more physical strength from anger. Shirou would definitely classify the Hulk would be a Berserker.

When we finally reached our destination, Shirou found himself to a lab. On the table, a staff was laid flat. Shirou instantly used his Structural Analysis on it and found that it was a scepter that contained a Mind Stone, one of the most powerful things in this universe. The Mind Stone is apart of a set of powerful stones called the Infinity stones. This Infinity Stone can alter the minds of others; it can provide unstoppable mental powers.

"So, what's this about?" Shirou asked.

Nick Fury was the first to respond. "I'd like to know who and what you are," he grumbled, menacingly.

Shirou chuckled at his attempt to intimidate him. "My name is Shirou Emiya and I'm a human, sir." He mockingly gave him a salute which got him a chuckle from Stark and Banner, and a death glare from everyone else.

Fury scowled. "We've got no record of a man named Shirou Emiya. Especially not a man with your obvious talents. How-"

"Were you able to do all that shit." Natasha said, loosing her patience. The magus guessed that him being an unknown variable was unnerving her a bit. Kicking her ass in the fight probably didn't help. However, he had a history of dealing with hostile women.

Somewhere in the Nasuverse, Rin Tohsaka sneezed, accidentally spraying Luvia Edelfelt, which resulted in a full out brawl involving magical blasts and reinforced fists. Many people were injured in the crossfire.

"I'm just a simple bowman," Shirou smirked, raising his hands to feign innocence.

"Bullshit," Rogers said. "I doubt a simple bowman could beat all of us like that."

"Giving the right situation, one could," Shirou replied, the arrogant smirk on his face seemed to tick them off even more.

"Just tell us how you did that," Stark said. "And don't say magic again. I don't care if you do have a decent explanation for it, magic isn't real."

That ticked the magus off a bit and his smirk disappeared. "Just because it doesn't make sense to you, doesn't mean it doesn't exist. Anyways, I'm a magus, a person who can perform magecraft and magical arts."

"We've never heard of any magus before," Fury stated.

"First of all, the plural of magus is magi," Shirou said, his smirk returning, 'and, well, here's the other thing... I'm from another universe."

Stark narrowed his eyes, "Multiverse theory is just that. A theory. And it hasn't even been proven yet."

"Well it's just been proven."

"Okay," Banner said, excited to see his first multiverse traveler, "How did you travel here?"

"I'm what's known in my universe as a Counter Guardian, a human who contracted to protect humanity. Its my job to eliminate threats to the planet and humanity. When my bosses found out there was a threat to my world, they sent me here to kill it. However, they can't bring me back so I guess I'm stuck here.

"Now," Shirou continued, pointing at the scepter. "What's that thing?"

By, the way, Infinity stones are only traceable at a high cost. I'm thinking either Shirou slips into a one-week coma after creating one or gets completely exhausted. Leave a comment.

Also, the reason he told them about his dimensional traveler status is because he thought that the truth would come out anyways.